Anilate Tethered Neutral Tetrahedral Pd(II) Cages Exhibiting Selective Encapsulation of Xylenes and Mesitylene |
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| Authors: | Dr. Ashok Yadav Meghamala Sarkar Dr. Sappati Subrahmanyam Atul Chaudhary Prof. Dr. Evamarie Hey-Hawkins Prof. Dr. Ramamoorthy Boomishankar |
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| Affiliation: | 1. Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pune, 411008 India;2. Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pune, 411008 India These authors contributed equally to this work.;3. Institut für Anorganische Chemie, Fakultät für Chemie und Mineralogie, Universität Leipzig, 04103 Leipzig, Germany |
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| Abstract: | The design of porous materials for the recognition of multiple hydrocarbons is highly desirable for the energy-efficient separation and recognition of chemical feedstock. Herein, three new iso-structural porous discrete metal–organic cages of formula {[Pd3(NiPr)3PO]4(R-AN)6} (R-AN=anilate linkers) for the selective recognition of substituted aromatic hydrocarbons are reported. The tetrahedral cages 1 , 2 , and 3 containing anilate, chloranilate, and bromanilate linkers exhibited selective encapsulation of mesitylene, o-xylene, and p-xylene, respectively, over other analogous aromatic hydrocarbons. These selective encapsulations were driven by the variations in the portal diameters present at each of these cages and their interactions with the hydrocarbon guests. These observations are supported by mass spectrometry, NMR studies, and theoretical binding-energy calculations. |
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| Keywords: | anilate ligands host–guest systems imido anions polyhedral cages xylene separation |
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